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bpo-30008: Fix OpenSSL no-deprecated compilation (GH-20397) 

Fix :mod:`ssl`` code to be compatible with OpenSSL 1.1.x builds that use
``no-deprecated`` and ``--api=1.1.0``.

Note: Tests assume full OpenSSL API and fail with limited API.

Signed-off-by: Christian Heimes <christian@python.org>
Co-authored-by: Mark Wright <gienah@gentoo.org>
This commit is contained in:
Christian Heimes 2020-06-01 08:58:14 +02:00 committed by GitHub
parent 2f172d8f15
commit a871f692b4
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 48 additions and 11 deletions
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2
Misc/NEWS.d/next/Library/2020-05-25-22-18-38.bpo-30008.CKC3td.rst Normal file
View File

@ -0,0 +1,2 @@
Fix :mod:`ssl` code to be compatible with OpenSSL 1.1.x builds that use
``no-deprecated`` and ``--api=1.1.0``.

56
Modules/_ssl.c
View File

@ -142,6 +142,24 @@ static void _PySSLFixErrno(void) {
# define PY_OPENSSL_1_1_API 1
#endif
/* OpenSSL API compat */
#ifdef OPENSSL_API_COMPAT
#if OPENSSL_API_COMPAT >= 0x10100000L
/* OpenSSL API 1.1.0+ does not include version methods */
#ifndef OPENSSL_NO_TLS1_METHOD
#define OPENSSL_NO_TLS1_METHOD 1
#endif
#ifndef OPENSSL_NO_TLS1_1_METHOD
#define OPENSSL_NO_TLS1_1_METHOD 1
#endif
#ifndef OPENSSL_NO_TLS1_2_METHOD
#define OPENSSL_NO_TLS1_2_METHOD 1
#endif
#endif /* >= 1.1.0 compcat */
#endif /* OPENSSL_API_COMPAT */
/* LibreSSL 2.7.0 provides necessary OpenSSL 1.1.0 APIs */
#if defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER >= 0x2070000fL
# define PY_OPENSSL_1_1_API 1
@ -201,6 +219,12 @@ static void _PySSLFixErrno(void) {
#define TLS_method SSLv23_method
#define TLS_client_method SSLv23_client_method
#define TLS_server_method SSLv23_server_method
#define ASN1_STRING_get0_data ASN1_STRING_data
#define X509_get0_notBefore X509_get_notBefore
#define X509_get0_notAfter X509_get_notAfter
#define OpenSSL_version_num SSLeay
#define OpenSSL_version SSLeay_version
#define OPENSSL_VERSION SSLEAY_VERSION
static int X509_NAME_ENTRY_set(const X509_NAME_ENTRY *ne)
{
@ -885,7 +909,7 @@ _ssl_configure_hostname(PySSLSocket *self, const char* server_hostname)
goto error;
}
} else {
if (!X509_VERIFY_PARAM_set1_ip(param, ASN1_STRING_data(ip),
if (!X509_VERIFY_PARAM_set1_ip(param, ASN1_STRING_get0_data(ip),
ASN1_STRING_length(ip))) {
_setSSLError(NULL, 0, __FILE__, __LINE__);
goto error;
@ -1361,7 +1385,7 @@ _get_peer_alt_names (X509 *certificate) {
goto fail;
}
PyTuple_SET_ITEM(t, 0, v);
v = PyUnicode_FromStringAndSize((char *)ASN1_STRING_data(as),
v = PyUnicode_FromStringAndSize((char *)ASN1_STRING_get0_data(as),
ASN1_STRING_length(as));
if (v == NULL) {
Py_DECREF(t);
@ -1657,7 +1681,7 @@ _decode_certificate(X509 *certificate) {
ASN1_INTEGER *serialNumber;
char buf[2048];
int len, result;
ASN1_TIME *notBefore, *notAfter;
const ASN1_TIME *notBefore, *notAfter;
PyObject *pnotBefore, *pnotAfter;
retval = PyDict_New();
@ -1719,7 +1743,7 @@ _decode_certificate(X509 *certificate) {
Py_DECREF(sn_obj);
(void) BIO_reset(biobuf);
notBefore = X509_get_notBefore(certificate);
notBefore = X509_get0_notBefore(certificate);
ASN1_TIME_print(biobuf, notBefore);
len = BIO_gets(biobuf, buf, sizeof(buf)-1);
if (len < 0) {
@ -1736,7 +1760,7 @@ _decode_certificate(X509 *certificate) {
Py_DECREF(pnotBefore);
(void) BIO_reset(biobuf);
notAfter = X509_get_notAfter(certificate);
notAfter = X509_get0_notAfter(certificate);
ASN1_TIME_print(biobuf, notAfter);
len = BIO_gets(biobuf, buf, sizeof(buf)-1);
if (len < 0) {
@ -3079,17 +3103,23 @@ _ssl__SSLContext_impl(PyTypeObject *type, int proto_version)
ctx = SSL_CTX_new(SSLv3_method());
break;
#endif
#if defined(TLS1_VERSION) && !defined(OPENSSL_NO_TLS1)
#if (defined(TLS1_VERSION) && \
!defined(OPENSSL_NO_TLS1) && \
!defined(OPENSSL_NO_TLS1_METHOD))
case PY_SSL_VERSION_TLS1:
ctx = SSL_CTX_new(TLSv1_method());
break;
#endif
#if defined(TLS1_1_VERSION) && !defined(OPENSSL_NO_TLS1_1)
#if (defined(TLS1_1_VERSION) && \
!defined(OPENSSL_NO_TLS1_1) && \
!defined(OPENSSL_NO_TLS1_1_METHOD))
case PY_SSL_VERSION_TLS1_1:
ctx = SSL_CTX_new(TLSv1_1_method());
break;
#endif
#if defined(TLS1_2_VERSION) && !defined(OPENSSL_NO_TLS1_2)
#if (defined(TLS1_2_VERSION) && \
!defined(OPENSSL_NO_TLS1_2) && \
!defined(OPENSSL_NO_TLS1_2_METHOD))
case PY_SSL_VERSION_TLS1_2:
ctx = SSL_CTX_new(TLSv1_2_method());
break;
@ -3207,7 +3237,7 @@ _ssl__SSLContext_impl(PyTypeObject *type, int proto_version)
conservative and assume it wasn't fixed until release. We do this check
at runtime to avoid problems from the dynamic linker.
See #25672 for more on this. */
libver = SSLeay();
libver = OpenSSL_version_num();
if (!(libver >= 0x10001000UL && libver < 0x1000108fUL) &&
!(libver >= 0x10000000UL && libver < 0x100000dfUL)) {
SSL_CTX_set_mode(self->ctx, SSL_MODE_RELEASE_BUFFERS);
@ -5286,7 +5316,11 @@ PySSL_RAND(int len, int pseudo)
if (bytes == NULL)
return NULL;
if (pseudo) {
#ifdef PY_OPENSSL_1_1_API
ok = RAND_bytes((unsigned char*)PyBytes_AS_STRING(bytes), len);
#else
ok = RAND_pseudo_bytes((unsigned char*)PyBytes_AS_STRING(bytes), len);
#endif
if (ok == 0 || ok == 1)
return Py_BuildValue("NO", bytes, ok == 1 ? Py_True : Py_False);
}
@ -6373,7 +6407,7 @@ PyInit__ssl(void)
/* SSLeay() gives us the version of the library linked against,
which could be different from the headers version.
*/
libver = SSLeay();
libver = OpenSSL_version_num();
r = PyLong_FromUnsignedLong(libver);
if (r == NULL)
return NULL;
@ -6383,7 +6417,7 @@ PyInit__ssl(void)
r = Py_BuildValue("IIIII", major, minor, fix, patch, status);
if (r == NULL || PyModule_AddObject(m, "OPENSSL_VERSION_INFO", r))
return NULL;
r = PyUnicode_FromString(SSLeay_version(SSLEAY_VERSION));
r = PyUnicode_FromString(OpenSSL_version(OPENSSL_VERSION));
if (r == NULL || PyModule_AddObject(m, "OPENSSL_VERSION", r))
return NULL;

1
Tools/ssl/multissltests.py
View File

@ -314,6 +314,7 @@ class AbstractBuilder(object):
"shared", "--debug",
"--prefix={}".format(self.install_dir)
]
# cmd.extend(["no-deprecated", "--api=1.1.0"])
env = os.environ.copy()
# set rpath
env["LD_RUN_PATH"] = self.lib_dir